Design an original otter postman collectible figure in a square studio product image. Give the character rounded but not infant-like proportions, a short brown-gray flocked surface, a mustard rain cape, a deep green satchel, and one small parcel with no writing held between two anatomically clear paws. The tail curves naturally into a stable third support point. Mount the figure on a compact base made from rain-darkened river stones and two wet leaves. The object is approximately eighteen centimeters tall and should read as a premium manufacturable designer toy: soft-touch vinyl for the body, semi-matte resin accessories, subtle textile weave on the cape, clean part separation, sensible seams, and balanced weight. Use a three-quarter view, broad soft top-side light, and a thin cool rim against a seamless pale blue-gray studio background. Keep the expression observant and gentle rather than childlike. No resemblance to an existing animation character, no postal brand marks, no text, no watermark, no extra paws, no melted shapes, and no unstable pose.